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MOODY G'. FREEMAN, OF WENONA, ILLINOIS.

Letters Patent No. 109,8-86. dated December 6, 1870.

IMPROVEMENT IN IRON` CULVERTS.

The Schedule referred to in these Letters Patent and making part of the same.

To aI-lwhom it may conce/rn.-

Be it known that I, MOODY` G. FREEMAN, of Wenona, in the county of, Marshall, and in the State of Illinois, have invented certain new and useful Improvements in Iron Tnnnelor Gulvert; and do hereby declare that the following isa full, clear, and exact description thereof, reference being had to the accompanying drawing and to the letters .of reference marked thereon making a part of this specification.

' .The nature of my invention consists in the construction and arrangement of an iron tunnel or culvert, as

lwill be hereinafter fully set forth.

In order to enable others skilled in the art to which my'invention appertains to make and use the same,.

I will now proceed to describe its construction and operation, referring .to the annexed drawing, in'

lA A, and one curved top-piece, B.

The sides of the arch B lap over the upper edges of the side pieces' A A, as shown in Iig. 2, and bolts passing through said lap-joints, a, secure them rmly together.

\Vhere the sections of the tunnel are joined together' they also form lap-joints l, as shown in g. 1, and are rmly secured togetherby bolts. v

The finished end of the tunnelis faced with a flange, d, while the other end is, in g. 1, represented as being cut oi square, but it is intended. to have the same provided` with a shoulder, like at the lap-joint b, so as may be required.

'Ihe arch B is on the outside provided with ribs, C C, for the purpose of making it secure and firm.

'Ihe ends of said ribs are inserted and held by staples, e e, on the outside of the side 4pieces A A.

The bottom D of the tunnel may be made of iron, or held rm by bars of iron, or Without either, or laid on masonry, as may be desired.

to allow the addition of as many sections in length asl Where the sections 'join o r come together cement of any descriptincan be used to make the tunnel water-tight;

'lhe T-shaped piece E, ofiron, shown in iig. 3, is

used when asecond tunnel or culvert is to be uscdy alongside of the first. It is placed backup against the .flange d and between it and the rst rib C. It may be fastened to the flange (l in any desired manner, to prevent the separation of 4two or more tunnels and keep them firmly in place 4when necessary to do so.

Io prevent the water from washing the dirt away from the sides of the tunnel, wood, iron, or masonry can be fastencdor built against the end ange or This tunnel can be ventilated, when necessary, with .Ventilating-shafts connected with' the top of the tunnellor culvert. In.that case as many holes or openings can be made in the' arched section as are necessary, and made water-tight about the shaft where they come in contact in the iron shoulder or rest on the rim around the hole or opening, as above suggnsted.

Where the pipe and top of arch about the hole come in contact, the space can be made water-tight by cement or any other known substance,compound, or

means thought desirable.

Having thus fully described my invention,

What I claim as new, and desire to secure by Letters Patent, is-

I. The arch B, grooved longitudinally at its edges, in combination with the side pieces A A, provided with tongues toIit in said grooves on thearch, and secured by bolts, substantially as shown and described.

2. In con'xbinatiou with the arch B and side pieces A A, constructed and joined together as described, the bands or ribs C- C, encircling the arch and their ends fastened in staples e e on the side pieces, substautially as and for the purposes herein set forth.

r In testimony that I claim the foregoing, -I have hercunto setrny hand this 16th day of July, 1870.

. MOODY G. FREEMAN.

Witnesses:

Trios. SLADE, WALTER M. HATCH. 

